The periodic table was developed based upon the work for which scientist

Hydrogenous sediments originate from elements in a. cold water. b. seawater. c. warm water. d. freshwater.

13 Powdered iron is magnetic, but powdered sulfur is not. What occurs when they form a mixture in a beaker at room temperature? (1) The iron retains its magnetic properties. (2) The iron loses its metallic properties.

Which subatomic particles orbit the nucleus

Assume the atmospheric pressure is 1 atm but the actual pressure is higher than 1 atm how will this error affect the calculated molar mass of the unknown

Do carbonated drinks expand your stomach

Draw the organic product of the following nucleophilic reaction

How does the energy of the activated complex compare with the energies of reactants and products? select one: a. it is lower than the energy of both reactants and products. b.

A student asked to convert measurements from liters to mililiters and from mililiters to liters. His answers are shown in bold in the choices shown below. On which choice did he make a mistake?

Donald is making a model of a nitrogen atom. The box for nitrogen in the periodic table is shown. To represent a neutral atom, which of these must Donald include in his model?

What are the charges and relative masses of the 3 main subatomic particles